Police said an armed man walked into the gas station about 10 p.m. Monday and demanded cash. Detectives said at some point, the man fired shots at the clerk before grabbing the cash register.

"Right now we are limited with information on what actually happened," said Chief Fire Investigator Greg Travis. "We're not exactly sure how this fire occurred."

Officials have identified the clerk as Gary Singh. He was being treated Tuesday at Central Mississippi Medical Center for burns to his back and arms, authorities said. Singh was not hit by any of the shots the robbers fired at him, police said.

BREAKING OVERNIGHT... POLICE SAY A JACKSON GAS STATION OWNER WAS ROBBED AND SET ON FIRE. IT HAPPENED ON OLD CANTON ROAD AND COLONIAL CIRCLE. 16 WAPT'S ANDREW KINSEY IS ON THE SCENE THIS MORNING WITH THE DETAILS. THE LIBERTY GAS STATION HERE ON OLD CANTON ROAD - IS A TOTAL LOSS. POLICE SAY TWO ARMED MEN - SET THE BUILDING ON FIRE - AFTER ROBBING THE CASHIER INSIDE. INVESTIGATORS SAY THIS ALL HAPPENED AROUND 10PM - LAST NIGHT. WHEN TWO MEN WALKED INTO THE GAS STATION AND DEMANDED CASH. AT SOME POINT DETECTIVES SAY THE ARMED MEN FIRED SHOTS AT THE CLERK - BEFORE GRABBING THE REGISTER. POLICE SAY THE MEN THEN SET THE CLERK AND THE STORE ON FIRE, AS THEY RAN AWAY ON FOOT. OFFICALS HAVE IDENTIFED THE CLERK AS GARY SINGH - WERE TOLD HE IS RECOVERING AT C-M-M-C - FROM BURNS TO HIS BACK AND ARMS. POLICE SAY THOSE BULLETS FIRED AT HIM BY THE ROBBERS - DID NOT HIT HIM. SAY OFFICERS WERE CASNVASING THE AREA LAST NIGHT - THE FOUND CASH REGISTER - TAKEN DURING ALL OF THIS, JUST A FEW BLOCKS AWAY FROM THE STORE. HOWEVER NO SIGN OF THE SUSPECTS.